Eddie Lampert sent an email to Sears employees on Monday announcing the company's bankruptcy filing. "I’ve decided to step down as CEO," Lampert wrote. "Know that this does not change my commitment to Sears Holdings, and I will continue to be actively involved as chairman of the board of directors."Lampert attributed the company's bankruptcy filing to "a difficult retail environment, unsatisfactory operating performance, and legacy liabilities impacted by historically low interest...